Glue-dissolver.



M. NYSTROM. GLUE DISSOLVER. APPLICATION FILED JULY 17,, 1913.

Patented Mar. 10, 1914 7 mm W UNITED STATES PATENT OFFICE.

MARTIN NYSTROM, OF CHICAGO, ILLINOIS.

GLUE-DISSOLVER.

Application filed July 17, 1913.

To all whom it may concern Be it known that I, MARTIN NYsrRoM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have ,invented a new and useful Glue-Dissolver, of which the following is a specification.

My invention relates to glue dissolvers in which the operation of dissolving the glue is continuous by providing an upper dissolving compartment and a lower melted glue compartment and the objects of my improvements are first, to provide a removable combined soaking and dissolving vessel in conjunction with a melted glue vessel; sec 0nd, to provide means for heating the dissolving vessel with steam without permitting the steam to mingle with the contents of the same; third, to provide means whereby the condensed steam from the glue dissolving vessel will heat the melted glue compartment' fourth, to provide means whereby the melted glue compartment can be heated with steam at will; fifth, to provide a novel glue filter in the glue dissolving vessel; sixth, to make a novel, neat, simple and ef ficient glue dissolver, and other features to become apparent from the description to follow.

Heretofore glue dissolvers have been made in which a lower melted glue vessel was provided in conjunction with an upper removable glue dissolving vessel, but the upper vessel was provided with a perforated bottom so that the process of soaking the glue had to be done by employing an additional vessel which would hold water, and furthermore, in substantially all devices which were placed in practical operation, the steam employed to heat the glue in the dissolving vessel would come in direct contact with the glue. Said constructions are objectionable on account of the multiplicity of vessels required and that the quality of glue is depreciated by coming into direct contact with the steam, and these objectionable features are entirely eliminated by the use of my invention.

To describe my invention so that others versed in the art to which it pertains can make and use the same, I have illustrated it on the accompanying sheet of drawing forming a part of this specification and in which:

Figure 1, is a perspective view showing the melted glue receptacle alone and the Specification of Letters Patent.

Patented Mar. 10, 1914.

Serial No. 779,480.

steam supply pipe attachments arranged to have the live steam pass down below the said melted glue receptacle to heat the same; Fig. 2, is a perspective view showing the glue melting vessel removed from the lower receptacle and showing the valve connected to the lower side of same, and Fig. 3, is a perspective view showing the complete device in vertical section.

Similar reference characters refer to similar parts throughout the several views.

The receptacles are preferably mounted on a suitable stand a, having three legs 5. The lower or melted glue receptacle 6 is of a size to fit into the depressed top of.

the stand l, which may be provided with suitable set screws 7 to secure the receptacle 6 into position. The receptacle 6 comprises the cylindrical body portion 8, the bottom 9, the inclined partition 10, arranged a short distance above the bottom and the top 11. The water compartment 12 is formed between the bottom 9 and the partition 10 and the melted glue compartment 13 is formed between the partition 10 and the top 11. The top 11 is provided with a central opening 14: through which the melted glue enters the compartment 13. The partition 10 forming the bottom of the melted glue compartment 13 is inclined so that the melted glue will drain toward the glue outlet valve 15 through which the melted glue is drawn off as desired by manipulating the valve handle 16.

The melted glue compartment 13 is kept hot by the hot water retained in the water compartment 12. Hot water from any source is fed into the compartment 12 through the inlet pipe 17 whose lower end terminates within the compartment 12 a short distance above the bottom 9. An outlet or overflow pipe 18 is connected to the upper part of the compartment 12 by means of which the hot water is retained at a certain level within the compartment 12. If for any reason it is desired to heat the water in the compartment 12 rapidly, live steam can be admitted through the inlet pipe 17, the water resulting from the condensed steam passing off through the overflow pipe 18. Thus when melted glue is placed in the compartment 13 it can be kept hotand in a soluble condition for an indefinite length of time and can easily be drawn out in any desired quantities. A drain cook 19 is provided at the bottom of the compartment 12 to drain the water out of same when desired, as in case of shipment or to remove sediment.

The upper glue dissolving receptacle 20 is arranged to sit on the top 11 of the lower receptacle 6 and comprises the outer cylinder body portion 21, the bottom 22, the partition 23 and the removable but snugly fitting cover 24. The steam chamber or compartment 25 is formed between the bottom 22 and the partition 23; and the glue compartment 26 is above the partition 23. As clearly seen in the drawing the partition 23 forms the bottom of the glue compartment 26 and is preferably inclined toward the discharge opening 27 which is shown as being concentrically located to the outer body portion 21 so that the partition takes the form of a shallow inverted cone. The purpose of having the partition 23 inclined. is to have the melted glue flow readily toward the outlet 27. The outlet 27 is provided with a valve 28 whose operating handle 29 is accessible from below the bottom 22, and as clearly shown in Figs. 2 and 3, of the drawing the central portion of the bottom 22 is sufliciently raised to have the lowermost point of the valve 28 above the lowermost edge of the receptacle 20, so that there will be no interference with the valve 28 when the receptacle 20 is placed right side up on the floor or any flat surface. The purpose ofthis particular construction of valve and bottom is to enable using the receptacle 20 for the double purpose of soaking glue and dissolving glue. To soak the glue, the receptacle 20 is removed from its position on the receptacle 6 and the valve 28 is placed to a closed position. In this condition the receptacle 20 can be used as an ordinary glue soaking vessel. To dissolve the glue, the receptacle 20 is placed on top of the receptacle 6 with the valve 28 in an open position and the same is heated by steam in the manner to be described. The valve 28 is arranged to register with the opening 14 provided in the top 11 of the lower receptacle 6, so that as the heat melts the glue in compartment 26 it will gravitate or flow through outlet 27 and valve 28 and thence into the compartment 13 of the lower receptacle 6. It will be noted that the bottom 22 is rigidly secured to the casing of valve 28 thus making the steam chamber 25 absolutely steam tight in all parts with the exception of the inlet 30 and the outlet 31.

The out.et 31 is made in the form of a tube extending from the top of the steam chamber 25 upward to nearly the top of the glue compartment 26 so that the steam which is admitted into the steam chamber 26 cannot escape to the atmosphere too quickly.

To heat the glue in the dissolving compartment 26 a constant flow of live steam is admitted into the steam chamber 25 through the inlet 30 from any desired source. As the glue is melted it will flow through the outlet 27 and valve 28 as above de scribed into the melted glue compartment 13. Since the melted glue is lighter than the unmelted glue and this fact tends to clog the outlet 27 in the bottom of the glue melting compartment 26, I provide a strainer 32 made in the form of an inverted trough fitting close to the bottom 23, eX- tending entirely across the compartment 26 and communicating with the outlet 27. The sides corresponding to the vertical sides of the trough are provided with a plurality of notches or holes 33 through which the melted glue will flow, from whence it. flows down on the inclined bottom 23 within the trough like strainer and thence through the outlet 27. The closed upper part of the strainer 32 prevents the heavier unmelted parts of the glue from clogging the free passageway for the melted glue afforded within the tube like strainer 32.

To facilitate the cleansing of the parts I prefer to secure the strainer 32 removably in the compartment 26 and to this end a locking member 3 1- is pivoted at 35 to the inner wall of the compartment 26 to swing on a horizontal axis and have its free end arranged to either be moved down to engage the top of the strainer 32 or to be moved up away from the said strainer. TVhen the said locking member 34 is moved down against the strainer 32 it clamps the same down tightly against the bottom 23 and retains it in place. A similar locking member is provided to engage the other end of the strainer 32 not shown.

While the device thus far described may be used or operated by admitting live steam at the inlet 30 from any source and admitting hot water at the inlet 17 from an entirely different source, I prefer to admit the hot water, resulting from the condensation of steam in the steam chamber 25, at the inlet 17, into the hot water cannpartment 12. The inlet 30 is preferably made in the form of a slightly tapering laterally extending tube on the body portion 21 and a cooperating fitting 36 is provided fit snugly on the tapering exterior of the inlet 30 so that a steam tight joint is formed between the two when telescoped together and said two parts can easily and quickly be disconnected by simply slipping the fitting or coupling 36 off of the inlet 30. The fitting or coupling 36 is made with a tubular branch 37 extending upward, another tubular branch 38 extending downward, and a horizontal diaphragm 39 between the two arranged to extend a short distance into the inlet 30. The diaphragm 39 is provided for the purpose of deflecting the live steam through the inlet 30 into the steam chamber 25, and permit the water resulting from the condensation of steam in the steam chamber to drain out through the inlet and thence through the tubular branch 88. The tubular branch 87 is connected to a source of live steam by means of the pipe or hose connection provided with the regulating valve 41 and the shut off cock 42. The tubular branch 38 is connected by means of the hose or pipe connection 43 to the inlet 17 of the hot water compartment 12. A handle 44 of non-heat conducting material is provided on the fitting or coupling 36 so the same may be easily handled at any time. The diaphragm 39 is cut away on each side adjacent the fitting 36 to permit the free entrance of the extremity of the inlet30. Thus when the upper receptacle 20 is on the lower receptacle 6 the flow of steam into the steam chamber 25 can be regulated by means of the valve 41 and the hot water resulting from the condensation of steam in the steam chamber 25 will fiow from said chamber 25 out through inlet 30, through the tubular branch 38, hose or pipe 43, inlet 17 and into the hot water compartment 12. The glue in compartment 26 as it is gradually melted by the heat will flow through the strainer 32, outlet 27 and valve 28 and into the melted glue compartment 13. V

A glass indicating gage is provided on the melted glue compartment 13 so that the quantity of glue in said compartment can be observed at all times. i

Of course previous to removing the upper receptacle 20 from its position on the lower receptacle 6 the fitting or coupling 36 is disconnected from the inlet 30 by simply pulling outward on the handle 44.

If at any time the water in the compartment 12 is not hot enough it can be quickly heated by passing steam into the inlet 17 and to do this in the simplest way I provide a stopper or closing cap 46 which is made tapering and the same size as the extremity of the inlet 30 to fit tightly into the open end of the fitting or coupling 36, so that the steam from the hose or pipe 40 will pass through the tubular branch 37 thence through the tubular branch 38 and thence through tube 43 and inlet 17 into the hot water compartment 12. If it is desired to heat both the upper and lower glue compartments 26 and 13 simultaneously, a cap or stopper can be applied to close the steam exit 31. The upper receptacle 20 is provided with suitable handles 47 for convenience in handling.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a device of the class described, a lower receptacle provided with an opening in the top and comprising a glue compartment and a water compartment below the glue compartment, an upper receptacle arranged to rest on and be in controlled communication with the lower receptacle and comprising a vertically disposed cylindrical body, a lower diaphragm or bottom secured in said cylindrical body, and an upper diaphragm or bottom depressed in the center secured in said cylindrical body to form a sealed steam space between the two diaphragms or bottoms and form a glue compartment above the upper diaphragm or bottom.

2. In a deviceof the class described, a lower receptacle provided with an opening in the top and comprising a glue receptacle and a water receptacle below the glue receptacle, a water inlet pipe leading from the interior of said water receptacle to the eX- terior thereof, an upper receptacle detachable from, and arranged to rest on and in controlled communication with the lower receptacle comprising a vertically disposed cylindrical body, a lower diaphragm or bottom secured in said cylindrical body and an upper diaphragm or bottom having its center depressed secured in said cylindrical body to form a sealed steam space between the two diaphragms or bottoms and form a glue compartment above the upper diaphragm or bottom, a steam inlet leading to said steam space, an outlet for condensed steam leading from said steam space, a detachable tube forming connection between said outlet and said water inlet pipe of the lower receptacle and means "for admitting steam through the said steam inlet of the upper receptacle.

3. In a device of the class described, a glue compartment, a sealed steam chamber for heating said glue compartment, a second glue compartment, a closed hot water compartment at a lower level than said steam chamber for warming said second named glue compartment and a tube leading from a source of steam supply provided with a branch connecting it to said steam chamber and a second branch connecting it to said water compartment, the parts being so constructed and arranged that the steam cannot contact with the glue.

4. In a device of the class described, a glue compartment provided with an opening in the top, a glue melting receptacle provided with a discharge opening in its bottom arranged to be removably placed on the top of said first named glue compartment with its discharge opening registering with the opening in the top of said glue compartment and a valve at the discharge opening of the glue melting receptacle to control the passage of glue through said discharge opening.

5. In a device of the class described, a glue compartment provided with an opening in the top, a glue melting receptacle provided with a discharge opening in its bottom ar- &

ranged to be removably placed on the top of said first named glue compartment with its discharge opening registering with the opening in the top of said glue compartment, a valve at the discharge opening of the glue melting receptacle to control the passage of glue through said discharge opening and a glue strainer comprising an inverted trough having perforated side walls secured on the bottom of said glue melting receptacle.

6. In a device of the class described, a glue melting receptacle comprising a cylindrical body portion vertically disposed, a diaphragm or bottom closing the lower end o1 said body portion and having its center raised, a second diaphragm or bottom secured in said. body portion a distance above said first named diaphragm or bottom and having its center depressed to substantially meet the raised center of said first named diaphragm or bottom and a connecting passageway at the junction of the centers of said two diaphragms or bottoms to permit the discharge of glue from above the upper diaphragm or bottom and prevent steam, confined in the steam space formed between said two diaphragms or bottoms, from passing above the upper diaphragm or bottom or below the lower diaphragm or bottom.

7v In a device of the class described, a

lower receptacle comprising a water jacket, an upper removable receptacle comprising a steam jacket or chamber, a water inlet on the lower receptacle, a combined steam inlet and condensed steam outlet on the upper receptacle, a source of steam supply and a combined steam and water pipe forming connection between said water inlet, said combined steam inlet and condensed steam outlet and 5 said source of steam supply. y In testimony whereof I have slgned my I name to this specification in presence of two subscribing witnesses this 7th day of July, 1 1913, at Chicago, Illinois.

MARTIN NYSTROM. Witnesses R. J. JAOKER,

i HAROLD M. Ross.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

